Geothermal Comfort Systems

As an ENERGY STAR®

partner, Carrier Corporationhas determined that theGeothermal ComfortSystem meets ENERGYSTAR guidelines for energyefficiency.

The Carrier® Geothermal AdvantageThroughout Carrier's historic 100-year legacy, thecompany has provided millions of homeowners withthe finest comfort systems available. Using state-of-the-art furnaces, air conditioners and heat pumps,Carrier dealers are experts when it comes tocustomized home comfort systems. But it doesn't endthere. Carrier also offers a complete line of exceptionalgeothermal comfort systems for your home.

According to the U.S. Environmental Protection Agency,geothermal systems are “the most energy-efficient,environmentally clean, and cost effective spaceconditioning systems available today.” That's because

a geothermal system taps into the earth to capturefree, renewable energy.

The earth absorbs about 47% of the sun's energythat reaches it, storing that energy in the ground. Ageothermal system extracts that free energy forheating during winter. For cooling, the system removesheat from the home and dumps it into the cooler earth.This transfer of heat energy is done through a seriesof pipes buried in the ground, or sunk in a pond, or byusing well water. Because a geothermal system simplymoves heat instead of burning a fossil fuel to generateit, it's more energy-efficient.

Why Choose Geothermal?Geothermal Systems provide homeowners with a wide range of benefits.

● Savings: Generally, no other heating and coolingsystem offers lower operating costs, with savingsup to 60% compared to ordinary systems.

● Comfort: These systems provide even temperaturesthroughout the home year round, with excellentdehumidification during cooling.

● Environmentally Sound: Geothermal is a clean,green, and renewable technology to reduce yourcarbon footprint now and for future generations.

● Reliable: Geothermal units last longer than ordinaryair conditioners and heat pumps. Since the unitscontain few moving parts, they operate for yearswith little maintenance.

● Quiet Operation: Unlike ordinary air conditionersand heat pumps, no outdoor unit is required. Carrier

geothermal units use heavy-duty, fully-insulatedcabinets for quiet operation. Quiet, soft startingvariable speed blowers are used in many models.

● Flexibility: Heating, cooling and supplemental waterheating from a single unit. And a wide variety ofmodels and options to fit most any application.

● Free Hot Water: During unit operation, freeexcess heat is used to supplement the home'swater heater.

● Energy Independence: Geothermal systemsreduce our need to import fuel.

● Safe and Clean: No flame, no flue, no odors.

The Energy Efficiency StoryOne of the main reasons many homeowners choosegeothermal is the benefit of lower operating costs. In mosthomes, the cost for heating, cooling and hot water combinefor about 70% of the total utility costs. Therefore, the biggestopportunity to save a substantial amount in utility costs is toimprove those systems. That's where geothermal can help ina big way.

For every one unit of energy purchased to operate ageothermal unit, it delivers four to five units of energybecause the energy from the earth is free. In many scenarios,a geothermal system is significantly less expensive to operatethan ordinary heating and cooling systems. Geothermalsystems can save up to 70% in heating costs, up to 50% incooling costs, and around 30-50% in hot water costs.

One way to compare efficiency is to calculate the cost for1 million BTUs of heat transfer. Using a standard formula, an“apples to apples” comparison can be made based on localfuel rates and equipment efficiency. The table at rightdemonstrates a typical savings opportunity with geothermal.To get the full picture for your home, contact your Carriergeothermal dealer.

offers a of

of Our

GT-PX the

features:

High-Efficiency Natural Gas $14.95

GEOTHERMAL $8.79

Air Source Heat Pump $17.58

Standard-Efficiency Natural Gas $17.75

High-Efficiency Propane $30.65

Fuel Oil $34.17

Electric Furnace or Baseboard $35.16

Standard-Efficiency Propane $36.40

Cost Comparison for 1 Million BTUs

Geothermal – 4.0 COP*, $0.12/kwhHeat Pump – 2.0 COP, $0.12/kwhNatural Gas – 95% AFUE†, 80% AFUE, $1.42/ccfPropane – 95% AFUE, 80% AFUE, $2.65/gallonFuel Oil – 81% AFUE, $3.80/gallonElectric Resistance – 1.0 COP, $0.12/kwh

* COP – Coefficient of Performance † AFUE – Annual Fuel Utilization Efficiency

Family GT-PX GT-PG GT-PX Indoor SplitModels 50YD (V,H,D) 50YE (V,H,D) 50YDSApplications Ultimate luxury Upscale Versatility

"Best" overall Great choice for Great performanceExceptional comfort excellent performance Used with air handlerand performance and reliability or gas furnace

Sizes 2, 3, 4, 5, 6 1.5, 2, 2.5, 3, 3.5, 2, 3, 4, 54, 5, 6

AHRI Ratings (13256-1)Closed Loop (GLHP) 3.6 - 4.6 COP 3.6 - 4.2 COP 3.6 - 4.2 COP

16.2 - 27.0 EER 16.6 - 20.2 EER 15.3 - 24.5 EERGround Water (GWHP) 4.3 - 5.1 COP 4.3 - 5.1 COP 4.3 - 4.7 COP

19.9 - 31.5 EER 21.6 - 28.1 EER 19.2 - 29.4 EERRefrigerant Puron® refrigerant Puron® refrigerant Puron® refrigerantCompressor Two-stage Single-stage scroll Two-stage

unloading scroll unloading scrollBlower Variable Speed ECM Variable Speed ECM Used with ECM

or PSC furnace or fan coilCabinet Configurations Vertical upflow Vertical upflow Compact cube

Vertical downflow Vertical downflowHorizontal Horizontal

Stages (* with aux.) 3 stages heating* 3 stages heating* 3 stages heating*2 stages cooling 2 stages cooling 2 stages cooling

Control CXM solid state CXM solid state CXM solid statemodule module moduleOn-board diagnostics On-board diagnostics On-board diagnostics

Air Coil Tin-plated Tin-plated Depends onair handler selected

Desuperheater Optional Optional OptionalInternal mount pump Internal mount pump Internal mount pump

Auxiliary Heat Optional Optional Depends on Internal mount Internal mount air handler selectedon vertical units on vertical units HYBRID HEAT ® option

Zone Control Optional Optional OptionalENERGY STAR® rated All sizes All sizes All sizesDealer Notes

GeothermalProductSelectionGuide

Free Energy From The EarthGeothermal systems can be installed with a variety of loop system configurations. “Closed loops” use re-circulated fluid ina series of pipes installed vertically, horizontally, or in a pond. “Open loops” use well water. Your dealer will determine whichdesign works best for your home.

Open Loop: Well water from an existing well can be used,then discharged into a drainage ditch or pond.

Pond Loops: Coils of pipe are fabricated and sunk to thebottom of the pond.

Vertical Loops: Used where land area is limited or soil conditionsprohibit horizontal loops. Installed using a drilling rig.

Horizontal Loops: Used on larger lots. Installed using abackhoe or trencher.

models may vary.

GT-PX Indoor Split GT-PE Outdoor Split GT-PW GT-PW50YDS 50YPS 50YEW 50YER

Versatility Easy Replacement Hydronic HydronicGreat performance for conventional AC unit High temperature Heating and coolingUsed with air handler Used with air handler heating performance capable for variousor gas furnace or gas furnace for radiant applications applications2, 3, 4, 5 2, 3, 4, 5 3 3, 5, 10

(13256-2) (13256-2)3.6 - 4.2 COP 3.6 - 4.2 COP 3.3 - 4.2 COP 3.1 COP15.3 - 24.5 EER 15.3 - 24.5 EER 16.0 - 16.4 EER4.3 - 4.7 COP 4.3 - 4.7 COP 4.1 - 5.2 COP 3.9 - 4.0 COP19.2 - 29.4 EER 19.2 - 29.4 EER 20.1 - 23.1 EERPuron® refrigerant Puron® refrigerant Puron® refrigerant Puron® refrigerantTwo-stage Two-stage Single-stage scroll Single-stage scrollunloading scroll unloading scrollUsed with ECM Used with ECM Not applicable Not applicablefurnace or fan coil furnace or fan coilCompact cube Outdoor unit Vertical "Euro-style" Compact cube

3 stages heating* 3 stages heating* 1 stage heating 1 stage heating2 stages cooling 2 stages cooling 1 stage coolingCXM solid state CXM solid state CXM solid state CXM solid statemodule module module with interface moduleOn-board diagnostics On-board diagnostics On-board diagnostics On-board diagnosticsDepends on Depends on Not applicable Not applicableair handler selected air handler selectedOptional Optional Optional OptionalInternal mount pump External module External mount pump Internal mount pumpDepends on Depends on Not applicable Not applicableair handler selected air handler selectedHYBRID HEAT ® option HYBRID HEAT ® optionOptional Optional Via control panel Not applicableAll sizes All sizes All sizes All sizes

Geothermal systems use the free, renewableenergy from the earth, so the technology is onethat can have a positive effect on your carbonfootprint. In fact, according to the GeothermalHeat Pump Consortium, installing a geothermalsystem instead of an ordinary system is theenvironmental equivalent (in emission reduction)of taking two cars off the road or planting anacre of trees. And because of improvedelectrical energy efficiency, geothermal systemsreduce the need to build additional costly, fuelburning power plants. It's clean technology –geothermal units produce no on-site emissions.

There are over 1 million geothermal installationstoday, resulting in the avoidance of more than5.8 million metric tons of carbon dioxide andmore than 1.6 million metric tons of carbonequivalent annually. In addition, existinggeothermal installations are the environmentalequivalent (in emission reduction) of taking1.2 million cars off the road, or planting morethan 385 million trees.

Go Green: ReduceYour Carbon Footprint

KeyFeatures

Carrier offers awide range ofmodel optionsand configurationsto fit a variety ofapplications. Ourpopular GT-PXseries includes thefollowing features:

1

3

4

5

6

7

8

9

2

Copeland Ultra-Tech™two-stage unloadingscroll compressor forexceptional performance,efficiency and reliability

Variable speed blowermotor for comfort andquiet operation

Tin-plated air coil forcorrosion resistance

Foil faced insulation inblower section for easycleaning. Insulatedcompressor section forquiet operation

Filter rack with two-inchMERV 11 filter for indoorair quality

Stainless steel drain panfor corrosion resistance

Unit Performance Sentinelmicroprocessor controlprecisely sequences andmonitors componentoperation for improvedperformance andserviceability

Double spring andgrommet compressorisolation for quietoperation

Heavy-duty cabinet,epoxy powder coated foraesthetics and long life

Note: Features on other models may vary.

1

2

34

5

6

78

9

Q: How efficient are geothermal heat pump systems?

A: Actual efficiencies will depend on a number offactors, but generally speaking a geothermal heatpump can be three to five times more efficient atproviding heat than a gas, propane or oil furnacebased on the amount of energy consumed toprovide a given amount of heat. For cooling, ageothermal system is generally 30-50% moreefficient than an air conditioner or heat pump.

Q: Why are geothermal heat pumps so efficient?

A: Geothermal heat pumps use the groundtemperatures as a “source” for heat energy duringheating, and use the ground as a heat “sink” duringcooling. The earth acts as a giant, free energybattery, providing an endless, renewable source forheating and cooling comfort. Standard heat pumpsuse outdoor air for heating and cooling. Because theground temperature is much more moderate andstable than air temperatures, geothermal systemoperation is much more energy-efficient, especiallyat extreme outdoor temperatures.

Q: Are these systems reliable?

A: Yes. Geothermal units are not subject to someof the same forces that cause wear and tear onother types of systems. And earth loops areinstalled using a special grade of polyethylenepipe with heat-fused fittings designed to last50 years or more.

Q: What kind of underground loop system is best?

A: It depends on several factors. Homes on larger lotsusually have horizontal loops installed. Smaller lotsmay require a vertical loop. A nearby pond can alsobe used. If you have a well water system, that maybe an option. Your Carrier dealer is trained todetermine which loop design is most appropriate foryour home. Regardless of the loop system selected,the operating costs are all about the same.

Q: How much space is needed for a closed loopsystem?

A: The smallest closed loop design, the vertical loop,may require a space of only 15x15 feet, or a line of3x45 feet, located at least 10 feet away from thehome, and 10 feet from property lines. Horizontalloops require considerably more space.

Q: How is the unit size and loop design determined?

A: Carrier dealers use GeoDesigner software todetermine the most appropriate sized unit and loopfor your home. The software takes many factors intoconsideration including: the heating and coolingrequirements of the home, loop type, depth, soilconditions, earth temperatures, outdoor airtemperature extremes, local fuel rates and muchmore. In addition, the software can demonstrateenergy costs for a Carrier geothermal system vs.another type of heating and cooling system.

Q: Will the fluid in the loops freeze during a long,cold winter?

A: No. Antifreeze in the loop fluid eliminates anyconcerns about freezing.

Q: Can a well be used instead of an earth loop?

A: Yes. Prior to using a well for a geothermalinstallation, the water quality should be checked.Sufficient water volume is needed for the unit,usually about four to nine gallons per minute duringunit operation. A discharge location like a pond ordrainage ditch is also required.

Q: How big does a pond have to be for use with ageothermal system?

A: For most installations, the pond should have asurface area of at least a half acre and a depthof 10 feet. Bigger is better.

Q: What is the actual efficiency of a geothermalsystem and how does it compare to a furnace,air conditioner or heat pump?

A: The efficiency of a geothermal system is rated by anindustry standard known as ARI/ISO 13256-1, thatspecifies a set of conditions by which efficiency isdetermined. The rating for heating is Coefficient ofPerformance (COP). It's a ratio of the amount ofenergy used to operate the unit compared to theamount of energy output. Carrier's highest efficiencygeothermal units have a COP in excess of 4.5 (that's450% efficient), compared to the highest efficiencygas furnace with a COP of 0.95 (95% efficient AFUE)or a high-efficiency heat pump with an averageseasonal COP around 1.8. The rating for cooling iscalled Energy Efficiency Ratio (EER). It's calculatedby dividing BTUs per hour output into the wattsused. Carrier's highest efficiency geothermal unitshave EERs around 18-27. That's about 30-50% betterthan many air conditioners and heat pumps. Butbecause geothermal units are not rated accordingto the same industry standard as furnaces, airconditioners, and heat pumps, it is difficult tocompare, for example, an AFUE and HSPF to COP,or SEER to EER. To get the full energy efficiencystory, compare the dollars. Your Carrier dealer cancalculate operating cost estimates using Carrier'sGeoDesigner software.

Q: Is comfort compromised to get all this efficiency?

A: No. In fact, geothermal systems can provideexceptional comfort without the “cold blow” from anair source heat pump during heating; or short, hotblasts of air associated with standard efficiencygas furnaces. Geothermal units deliver air attemperatures that provide comfort throughout thehouse. The Carrier dual capacity units with variablespeed fans precisely match the needs of the hometo deliver comfort no matter what the outdoor airtemperature is.

Frequently Asked Questions

Q: Can a geothermal unit be combined with a gas orpropane furnace?

A: Yes. Some homeowners like the benefitsof both technologies. In this case, ageothermal “split” unit (compressoronly) is connected to a furnace andcooling coil. The geothermalunit will perform all thecooling and some of theheating. During thecoldest days,the systemswitches overto furnaceoperation.This type ofsystem maybe a goodchoice for areplacement installation.

Q: Can the existing duct work and electrical service be used?

A: Generally, the existing duct work can be used with ageothermal unit without extensive modification. Variablespeed blowers used in many of the Carrier geothermal units

can compensate for a less-than-optimum duct system.For the electrical supply, a 200-amp service for the homeis recommended.

Q: What about radiant floor heating?

A: A geothermal system can be designed to provide warmwater for radiant floor applications. Carrier's water-to-watergeothermal units are four to five times more efficient thantoday's best boilers.

Q: Are geothermal systems more expensive to install, andhow long does it take for the extra expense to pay foritself?

A: Geothermal systems are generally more expensive to installthan ordinary systems. For replacement installations, theadded cost is usually recovered in a few years. In a newhome where the added cost of the system is included in themortgage, the monthly energy savings may be greater thanthe added cost, providing the homeowner with a positivecash flow from day one. Because every situation issomewhat unique, your Carrier dealer can demonstratethe complete financial scenario for your home using theGeoDesigner software. Many homeowners find that a Carriergeothermal system is a great investment.

Frequently Asked Questions (con’t)

A member of the United Technologies Corporation family.Stock Symbol UTX.

© Carrier Corporation 2010 01-811-20311-25

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs withoutnotice or without incur ring obligations.

www.carrier.com 1-800-CARRIER

Incentives, Rebates and Tax CreditsBecause geothermal systems can be part of the solutionfor national energy policy, and for efficiency programs ofvarious utilities, many incentives are available throughoutthe U.S. and Canada. Some homeowners may qualify for taxcredits of 30% of the system cost (with no maximum). Checkwith your Carrier dealer and tax professional to find out whatincentives are available in your area, and which ones youmay qualify for.

Limited WarrantyAs part of our commitment to quality, Carrier geothermalunits are backed with a standard 10-year limited warranty onall internal components. An optional extended warrantyprovides labor allowances for 10 years on all parts. Ask yourCarrier dealer for details on both coverage plans.

For units manufactured on or after July 1, 2010.

Factoids● With over 1 million geothermal installations, the total

estimated annual energy savings is 8 billion kWh ofelectricity and 40 billion BTUs of fossil fuels. It reducesour reliance on imported fuels by 21.5 million barrels ofcrude oil per year.

● Homeowners with geothermal systems installed aresaving a combined, estimated $750 million over 20 years.

● Surveys by utilities have shown that more than 95% ofgeothermal system owners would recommend thetechnology to others.

● The amount of the sun's energy absorbed by the earth ismore than 500 times the energy required for all ofmankind every year.

● Geothermal systems installed in schools are saving over$25 million in energy costs annually, saving more moneyfor books, equipment and teachers. (Source: Geothermal Heat Pump Consortium)